// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "src/wasm/memory-tracing.h"

#include "src/utils.h"
#include "src/v8memory.h"
#include "src/vector.h"

namespace v8 {
namespace internal {
    namespace wasm {

        void TraceMemoryOperation(ExecutionTier tier, const MemoryTracingInfo* info,
            int func_index, int position, uint8_t* mem_start)
        {
            EmbeddedVector<char, 64> value;
            auto mem_rep = static_cast<MachineRepresentation>(info->mem_rep);
            switch (mem_rep) {
#define TRACE_TYPE(rep, str, format, ctype1, ctype2)                    \
    case MachineRepresentation::rep:                                    \
        SNPrintF(value, str ":" format,                                 \
            ReadLittleEndianValue<ctype1>(                              \
                reinterpret_cast<Address>(mem_start) + info->address),  \
            ReadLittleEndianValue<ctype2>(                              \
                reinterpret_cast<Address>(mem_start) + info->address)); \
        break;
                TRACE_TYPE(kWord8, " i8", "%d / %02x", uint8_t, uint8_t)
                TRACE_TYPE(kWord16, "i16", "%d / %04x", uint16_t, uint16_t)
                TRACE_TYPE(kWord32, "i32", "%d / %08x", uint32_t, uint32_t)
                TRACE_TYPE(kWord64, "i64", "%" PRId64 " / %016" PRIx64, uint64_t, uint64_t)
                TRACE_TYPE(kFloat32, "f32", "%f / %08x", float, uint32_t)
                TRACE_TYPE(kFloat64, "f64", "%f / %016" PRIx64, double, uint64_t)
#undef TRACE_TYPE
            default:
                SNPrintF(value, "???");
            }
            const char* eng = "?";
            switch (tier) {
            case ExecutionTier::kTurbofan:
                eng = "turbofan";
                break;
            case ExecutionTier::kLiftoff:
                eng = "liftoff";
                break;
            case ExecutionTier::kInterpreter:
                eng = "interpreter";
                break;
            case ExecutionTier::kNone:
                UNREACHABLE();
            }
            printf("%-11s func:%6d+0x%-6x%s %08x val: %s\n", eng, func_index, position,
                info->is_store ? " store to" : "load from", info->address,
                value.start());
        }

    } // namespace wasm
} // namespace internal
} // namespace v8
